Answer:
-1.75.
Step-by-step explanation:
The z-score = (n - m) / d where n is the value (13) m = mean and d = standard deviation.
= (13 - 20) / 4
= -1.75 (answer)
Answer:
8
Step-by-step explanation:
find the pattern -19+8=-11, -11+8=-3, -3+8=5
Answer:

Step-by-step explanation:
As long as the two equations represent the same straight line on the coordinate plane (they overlap), there will be infinite many intersections and infinite number of solutions.
Answer:
16
Step-by-step explanation:
If
, just put the number
instead of
.
So:
